In data modeling, what is the term for the process of selecting a subset of data for model training and testing?

What is the primary goal of data modeling in the context of data science?

A. To collect raw data

B. To predict future data

C. To represent and understand data

D. To clean and preprocess data

In data modeling, what is the term for a visual representation of the relationship between different entities in a database?

A. Data Dictionary

B. Data Flow Diagram (DFD)

C. Entity-Relationship Diagram (ERD)

D. Data Cube

What is the process of transforming raw data into a structured format suitable for analysis called?

A. Data Aggregation

B. Data Wrangling

C. Data Imputation

D. Data Integration

Which data modeling approach represents data as a collection of entities, their attributes, and the relationships between them?

A. Hierarchical Modeling

B. Relational Modeling

C. Object-Oriented Modeling

D. Entity-Relationship Modeling